FORMATION OF HYDROXYL RADICALS FROM REACTION OF CU(II) WOOL KERATIN COMPLEX WITH HYDROGEN-PEROXIDE

Citation
K. Fukatsu et T. Takahata, FORMATION OF HYDROXYL RADICALS FROM REACTION OF CU(II) WOOL KERATIN COMPLEX WITH HYDROGEN-PEROXIDE, Textile research journal, 63(5), 1993, pp. 289-295
Citations number
15
Categorie Soggetti
Material Science
Journal title
ISSN journal
00405175
Volume
63
Issue
5
Year of publication
1993
Pages
289 - 295
Database
ISI
SICI code
0040-5175(1993)63:5<289:FOHRFR>2.0.ZU;2-1
Abstract
In order to determine that the degradation of wool keratin molecules i n the Cu(II)/wool keratin complex/hydrogen peroxide system may be brou ght about by the hydroxyl radical formed in this system, hydroxyl radi cal formation was measured using the thiobarbituric acid method. The C u(II)/wool keratin complex can yield hydroxyl radicals by reaction wit h hydrogen peroxide, but under anaerobic conditions the amount of hydr oxyl radical formation is less than that under aerobic conditions. Epi nephrine oxidation, an indicator of superoxide radical generation, occ urs in the reaction of this system. These results indicate that the Cu (II)/wool keratin complex appears to catalyze hydroxyl radical formati on from the hydrogen peroxide superoxide radical being formed as an in termediate. The sequence of reactions leading to hydroxyl radical form ation is essentially the metal catalyzed Haber-Weiss reaction.